The bomb was reportedly made of metal and placed in an alleyway at the base of a light pole. The Orange County Register said the bomb detonated with such force it blew a hole straight through a wooden fence that was about 40 feet away.

Anna Trujillo, an employee at a nearby car dealership, heard the blast as she was with customers. "It was too loud to be a shot so we were like, 'It has to be a bomb.' And then we see all the white smoke coming out," Trujillo told CBS Los Angeles. "I was scared."

The local bomb squad was investigating the blast, but did not have anyone in custody yet.